John in Santa Cruz
Senior Member
Site Team
measure the heights of your tow vehicle's bumpers front and rear before hitching the trailer, after hitching and before attaching the WDH, and after connecting the WDH spring bars or whatever. the 2nd set of numbers (front, rear) should be somewhere in between the first two sets. after hitching before attaching the WDH, its quite possible your front end goes UP as the tongue weight will tend to unload the front wheels, the WDH should put the front end back down and bring the back end up some.